Pipe-wrench.



No. 667,852. Patented Feb. l2, lam;

F. E. SANDS.

PIPE WRENCH.

(Application filed Fab. 5, 1900.)

(No Model.)

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FRED E. SANDS, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO WILLIAM QUINBY, TRUSTEE, OF SAME PLACE.

PiPE -WRENCH.

SPECIFICATION forming part of Letters Patent N 0. 667,852, dated February 12, 1901.

Application filed February 5, 1900. Serial No. 3,923. (No model.)

To aZZ whom it may concern; 6 is passed around the pipe and its end caught Beit known that I, FRED E. SANDS, of Camon the hook 8. By moving the nut 9 up the bridge, in the county of Middlesex and State shank 3 the loop of the chain is then drawn of Massachusetts, have invented certain new closely around the pipe, the body of the 55 5 and useful Improvements in Pipe-l/Vrenches, wrench being turned so that the link 7 stands of which the following is a specification. out at an angle to the face 4. Then by exert- This invention relates to pipe-wrenches of ing pressure on the handle 2 in the direction the kind employing a chain to embrace the of the arrow in Fig. 1 the face 4: may be pipe. brought down against the link 7, still further 60 10 The invention has for its object to increase tightening the loop on the pipe and causing the hold of the wrench on the pipe, at the the teeth 11 to bite on the surface of the pipe same time distributing the pressure and afand prevent slipping. A continuation of this for-ding as little defacement of the pipe as is movement of the handle rotates the wrench consistent with the proper strength of hold as a whole around the pipe as a center and 65 15 and a simple construction of the wrench. tends to turn the pipe.

Of the accompanying drawings, Figure 1 Having thus explained the nature of my inrepresents a side view of a pipe-wrench emvention and described a way of constructing bodying myimprovement. Fig. 2 represents and using the same, though without attempta top edge view thereof. ing to set forth all the forms in which it may 70 The samereference characters indicate the be made or all of the modes of its use, what same parts in both figures. I claim, and desire to secure by Letters Pat- Referring to the drawings, 1 designates a cut, isframe equipped with a handle 2 at one end, a 1. A pipe-wrench having a frame with the flattened screw-threaded shank 3, andatranstransverse terminal face 4 and a screw- 75 verse terminal face 4:, here shown as flat. threaded shank, the hinge 5, located at one 5 is a hinge projecting beyond the termi end of and projecting beyond said face, the nal face A, at one end of said face, and therechain 6, having the link 7 attached to said fore at one side or edge of the frame 1; On pivot and arranged to lie across the said terthe hinge 5 is pivoted a chain 6, having at its minal face, and a locking member at its other 80 0 free end a loop 7, which is adapted to catch end, a nut on said shank, and a'saddle emover a hook 8, located on the same side of the bracing said nut and having a locking memframe 1 as the hinge 5. For the purpose of her adapted to engage the locking member on adjusting the chain to diiferent sizes of pipes the chain and located on the same side of the the hook S is formed on a saddle 9, which emframe as the hinge 5. 5 braces a nut 10, screwing on the threaded 2. A pipe-wrench having a frame with the shank 3. The first link 7 of the chain forms transverse terminal face 4 and a screwone member of the hinge 5 and is preferably threaded shank, the hinge 5, located at one provided on its inner edge with teeth 11, end of and projecting beyond said face, the which catch in the pipe and prevent the chain 6, having the link 7 attached to said 9o 40 wrench from slipping on the pipe. The link hinge and arranged to lie across the said ter- 7 is adapted to lie across and against the terminal face, and a locking member at its other minal face 4 on the wrench-frame when the end, a nut on said shank, a saddle embracwrench has full grip on a pipe 12, the link ing said nut and having a locking member and face mutually supporting each other. adapted to engage the locking member on the 5 The middle or free end portion of the chain chain and located on the same side of the 6 then lies across the knuckle or angle of the frame as the hinge 5, and the teeth 11 on the hinge 5, so that the chain completely surinner edge of link 7.

rounds the pipe 12. A strong grip and an 3. A pipe-wrench havinga frame provided equal distribution of pressure are thereby obwith a transverse end face inclined so as to 50 tained. form an acute angle or corner close to one In applying the wrench to a pipe the chain side of the frame, means on said side for the attachment and adjustment of the free end of the chain, and a chain attached to the frame at said corner, the attachment being by means of a rigid hinge member on the 5 frame, projecting longitudinally beyondthe said inclined end face, and asecond hi'n'g'e member formed by the first link cf the chain, the said inclined end face forming an abutment or support for the first chain-link, and 10 the free part of the chain abutting against the bend of the hinge when the Wrench is applied to aipipe, the bight of the chain forming substantially a complete circle around the 1 e. Y p I n testimony whereof I have affixed my sig- 15 natiire in presence of twd Witnesses.

FRED E. SANDS. Witnesses:

HORACE BROWN, P. W. PEZZETTI. 

